Vacuum cleaner



May 31 1932- y T. E. D. Bl-LDE 1,860,884

l VACUUM CLEANER Filed Feb. 25, 1930 50 claims parte Wi Patented May 31, 1932 UNITED STATES PATENT. OFFICE- '.lIORD ERIK DANmL BILDE, 0F STOCKHOLM, SWEDEN, ASSIGNOB, BY yINIESNIE ASSIGN- y MENTS, T ELECTROLUX CORPORATION, A CORPOBATIlON OF DELAWARE 'VACUUM CLEANER :Application led February 2?-, 1930, Serial No. 431,241, and in Germany Iaroh 5, 1929.

This'invention relates to vacuum cleaners, and more particularly' to a new and improved type of motor support for resiliently mountling a motor therein. The invention is par- 5 ticularly applicable to a vacuum cleaner havinga' horizontal casing in whichA the motor and fan are mounted as a unit and provides for' preventing mechanical vibrations from being transmitted between the motor and the casing whereby a substantially vibrationless 'and noiseless o ration is effected.

' An object o the invention is to provide a resilient support for the motor unit of a vacuum cleaner. Other objects of the invention are: To provide an insulating support for the motor whereby the electrical circuit is insulated from the casin of the vacuum cleaner; toprovide a resilient support at substantially the center of gravity of the motor unit whereby torsional forces are eliminated;

to provide a support which affords a limy ited range of movement to the motor unit with respect tothe stationary part ofthe vacuum cleaner, so that the umt fis protected from shocks and jars and the vibrations of the motor are not imparted to the stationary l part of the cleaner; to provide a free, Heating, resilient support for the motor unit; and to provide a chea simple, convenient and efficient device of t etype above indicated.

This invention also consists in certain new and original features of construction and combination of parts hereinafter set forth and claimed.

Although the novel features which are believed to be characteristic of this invention will be particularly pointed out in the claims Aappended hereto, the .invention itself, as to its objects and advantages, the mode of its operation andthe manner of its organization may be better understood by referring to the following description taken in connection with the accompanying drawings formin a part thereof in which:

Y ig. 1 is a side elevation of a vacuum l'cleaner unit partly broken away to show the motor unit and support; and

Fig. 2 isa section on the line 2-2 of Fig. 1.

In the follo description and in the 1l identified by specific \by any convenient means.

names for convenience, but they are intended to be as generic in their application to similar parts as the'art will permit.

Referring to the drawings more in detail, one embodiment of the invention is shown as applied to a vacuum cleaner unit compris lng a cylindrical barrel 10 having a ring 11 mounted at one lend thereof and a ring 12 mounted near the other end thereof in the plane of themotor support, to be described. Bell 13, which is provided with a central aperture formed to receive coupling member 14, is seated on ring 11 and secured thereto Coupling member 14 has a bore for receiving a flexible air hose or similar device. Cap 16, which is also provided with a central aperture for receiving couplin lmember 14, is telescoped over theend of arrel 10 and seated a ainst ring 121.9 which it is secured by any suitable means. 'i

. A flexible handle 17 is connected to barrel 10 and ring 12 by members 19 and 20 respectively. Said handle is preferably located at the center of gravity of the cleaner unit and facilitates transportation thereof. Runners 21 are mounted in lugs 22 and 23 formed on rings 11 and 12 respectively and support the unit on a surface, such as a floor. Shield 24 is mounted within barrel 10 and separates the dust bag compartment from the compartment contanin the motor unit. vSaid shield is provided wit a central' aperture 25 for the admission of air to the fan which is covered by a screen 26 for preventing undesired a5 particles of material from being drawn vinto said fan.

Motor 30, having a shaft 33, is mounted within housing 31. Fan 32 is carried on shaft 33 and is supported thereby. `Motor 30, housing 31 and fan 32 constitute the motor unit, whichmay' be assembled independently ofthe other parts of the vacuum cleaner and secured therein by a supporting mechanism to be described.

.For supporting the motor unit within barrel 10 there is provided a rin 35 whichis preferably formed of insulatin material, such as rubber, phenol condensation/ product or similar substagce. Said ring is:l mounted 100 withinbarrel in the plane of ring 12 and is secured thereto by screws 36. Rin is provided with pairs of recesses 37 wich are inclined to the plane of said ring on opposite sides thereof.

Housing 31 of motor 30 is provided with lugs 38 which are cast inte ally therein and have recesses 39 which are 1n alignment with recesses 37 when the housing is in operative position. Spiral springs 40 are seated in recesses 37 and 39 and support housing 31 and the motor unit. Said spiral springs are arranged in pairs and are oppositely inclined to the plane of rin 35. The entire supporting assembly inc uding rin 35 and the cooperating sprin are prefera ly mounted in a plane extending through the center of gravity of the motor unit whereby the .unit is freely supported and torsional forces are eliminated.

The support is simple and cheap to manufacture and provides a convenient mounting for the motor which may be readily applied or dissembled. The entire motor unit including the motor and fan are resiliently mounted with respect to the casing of the vacuum cleaner 'unit whereby transmission of vibrations therebetween is prevented.

This results in la substantially vibrationless and noiseless operation while the electrical lnsulation serves to isolate the currentcarryilg elements and eliminates the ossiblillit the operator receiving an acci ental s While certain novel features of the invention have been shown and described and are pointed out in the annexed claims, it will be understood that various omissions, substitutions and changes inl the forms and details of Athe device illustrated and in its operation may be made by those skilled in the art without de arting from the spirit of the invention. u'rthermore, it will be understood that while one embodiment is illustrated, the

invention isnot to belimited except by the scope of the appended claims considered in the `light of the prior art.

' What I claim is:

1. In a vacuum cleaner having a cylindrical casing member, a motor, a housing therefor and means for mounting said housin in said casing mem r comprising'a ring o insulating materia secured to saidcasing member4 and spiral springs interconnecting said ring with said housing.

2. In a vacuum cleaner having a cylindrica l casing member,.a motor, a housing therefor and means for mounting said housin 1n .ring with said housin ,said ring an housing havingalign'e said casing member com rising, a ring o insulatin material-secure to said casing member, an spiral springs interconnecting sald said recesses in which said sp are seated. '3. a vacuum cleaner having,a substantially cylindrical casing member, a motor unit, a support therefor comprising a ringl housing for said motor, a ringof insulating material secured to said casing member, said housing and said ring formed with corresponding pairs of oppositely inclined-recesses, and pairs of oppositely inclinedv springs retained in corresponding recesses i for supporting said motor in said casing.

6.j In a vacuum cleaner, a horizontally supported cylindrical casing, a motor, and means for resiliently supportin said motorin said casing comprising spira springs extending between said motor and said casing, said springs being peripherally spaced about said motor and said casin and having their axes angularly disposed with respect to and being symmetrical with respect to` a plane transverse to the axis of said casino'.

7. In a vacuum cleaner havmg a cylindrical casing member, a motor, a housing therefor, and means for mounting saidl housing in said casing member comprlsing a ring of insulating material secured to said casing member, and spiral springs interconnecting said ring vwith said housing, said springs being peripherally spaced equidistantly about said rin and having their axes disposed angular with respect to and being symmetrical wlth respect to a plane transverse to the axis of said casing member.

8. In a vacuum cleaner having a casing,

means for supporting said casing in her1- zontal position above a horizontal surface, a

motor, a housing therefor, and means for mounting said housing 1n said casing axlally thereof comprising a ring of insulatingmatesignature.

TORD ERIK DANIEL BILDE. 

